Yeah, I remember this from the Vtuber community. Anytime there were two friends (or genmates or something) having a wholesome moment during a collab, people would flood chat with "Tee Tee".
Obviously it was just because his terror was so great it flared out through his expression and caused his glasses to disintegrate down to their base elements from its sheer intensity, before his nature as a ‘glasses-wearing best friend-kun’ forced reality to manifest a new pair, lest all of existence collapse in on itself.